pop a splint
v. phr.— «The injury is in the area behind the knee, and is caused by too much stress on a bone that results in its outer covering becoming inflamed. In racing parlance, it’s called “popping a splint.”» —“Bellamy Road Hurt, Off Triple Crown Trail” in New York City ABC News May 10, 2005. (source: Double-Tongued Dictionary)
Further reading
In the 15th century, the word respair meant “to have hope again.” Although this word fell out of use, it’s among dozens collected in a new book of soothing vocabulary for troubled times. Plus, baseball slang: If a batter...
Sean in Oneonta, New York, says that when he was growing up in New Jersey, his family would pile in the car and set off on a surprise adventure, whether a short distance or long, and the kids would be told only that they were going on Buxtehude...